code: def test_raises_not_feature_collection(self):
      geo = {
          "type": "Feature",
          "geometry": None,
          "properties": {"a": 5},
      }
      with self.assertRaises(InvalidGeoJson):
          geojson_layer(geo)
  
file_path: gmaps/gmaps/tests/test_geojson_layer.py
imports: import unittest
  from ..None import geojson_layer, InvalidGeoJson, GeoJsonFeature
label_desc: Use image node_id 3 for calling the GeoJson obj's underlying member method code with example usage: obj.test_raises_not_feature_collection() without return types